Question : no SOA record came back

Ohh crap, I dont know what Ive, done, infact, i dont think ive done anything, but all of a sudden my sites dont work, I do a DNS report on hca-online.com from dnsstuff.com and it says

No valid SOA record came back:
is not hca-online.com.

$ttl 38400
hca-online.com.      IN      SOA      ns1.hca-online.com. dna.hcagroup.com.au. (
                  2008080808
                  10800
                  3600
                  604800
                  38400 )

Does anbody see the problem?

Answer : no SOA record came back

Very odd. The only way you could have got the response you did is if the query ended up asking OpenDNS for the answer (or for recursion).

That is only the query though, it doesn't refer to resolution for the domain as an authoritative domain if the request gets as far as your own DNS server. Everything else within the zone file is perfectly sane.

Chris